Description
ESP32-S3 WiFi 8-Channel Relay Module with PoE, CAN and Industrial Enclosure
The ESP32-S3 8-channel WiFi relay module is designed for industrial control, automation and remote monitoring. It integrates WiFi, Bluetooth, PoE, isolated CAN interface, 8 digital inputs, real-time clock, audio processing, and multiple isolation protections. Ideal for reliable and scalable industrial IoT systems.
Key Features
- ESP32-S3R8: 32-bit LX7 dual-core processor, up to 240 MHz
- Networking: 2.4 GHz WiFi (802.11 b/g/n), Bluetooth 5 (LE/Mesh)
- 8 Relays: max 10 A @ 250 V AC or 30 V DC, optocoupler-isolated
- 8 Digital Inputs: 5–36 V, passive/active (NPN/PNP), opto-isolated
- Isolated CAN bus: with optional 120 Ω termination (jumper-enabled)
- PoE (C version only): IEEE 802.3af compliant, single cable for power + data
- Memory: 8 MB PSRAM, 16 MB Flash
- RTC: PCF85063 with battery backup via AXP2101
- Storage: TF card slot for data logging and media use
- Audio: Dual digital microphone array, echo cancellation (ES7210)
- USB-C: for power, programming and USB communication
- Enclosure: Industrial ABS DIN-rail case (175 × 90 × 40 mm)
Isolation & Protection
- TVS diode, ESD protection, surge suppression
- Optocoupler isolation on all inputs/outputs
- Power isolation ensures safe field-side operation
Additional Features
- WS2812 RGB LED, programmable via GPIO
- RGB status indicators: Power, TX, RX
- Piezo buzzer for status or alarms
- 8-pin expansion header: UART, GPIO, I2C
Version Options
- ESP32-S3-ETH-8DI-8RO-C: Standard Ethernet + CAN
- ESP32-S3-POE-ETH-8DI-8RO-C: PoE Ethernet + CAN + Relays + Digital inputs
Typical Use Cases
- Industrial automation and remote I/O
- Building automation and smart energy
- IoT data logging and edge computing
- Voice interaction and environmental audio processing
Resources
Reviews
There are no reviews yet.